const man = {
    name: 'jscoder',
    age: 22
};
const proxy = new Proxy(man,{
    get (target, property, receiver) {
        if(target[property]===undefined){
            throw new Error(`Property "$(${property})" does not exist`);
        }else{
            return Reflect.get(target, property, receiver)
        }
    }
});